Social Studies, 26.03.2020 22:14 shyyyy13

All of the following are accurate statements about pretests and posttests except:
A. In order to be an experiment, there must be a posttest.
B. In order to be an experiment, there must be a pretest.
C. Some experiments have multiple posttests and pretests.
D. Pretests provide a direct measure of change over time.

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